[fprint] Working with small sensors

[Benjamin Berg]

On Fri, 2020-06-12 at 22:08 +0700, Indev wrote:
> What is the state of small sensors matching? Are there any working
> drivers for small sensors?

I think the equivalent case here is the elan driver. It continues to
grab more image frames assuming that the user is swiping the finger
over the sensor. These are then stitched together into a larger image
for minutiae detection.

This does work in principle, but it is pretty brittle overall and
really not a very good solution.

Benjamin
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